No, only Supervisors can block members from the site. If you notice a user that is vandalising the site, please report it in the "Report Vandalism and Abuse" section of the Community Forum, or click "Report Abuse" in the top-right hand corner of the question.
The members and non-registered people.
Yes. People just like you and me are answering these questions.
Members of this site. Which are composed of people with hobbies, people with experience, experts and so on. The community here is very diverse.
There are many types of people who are answering health related questions.
yes
It is not one person answering the questions. Many different people answer the questions. They are of many different ages, from young to old.
to find out info from real people to questions that they need answering or if your answering questions its because they want people to know that they are helping them unlike me hope this was useful
answering questions that people ask!
Anyone can answer questions on WikiAnswers. So some people who answer them are knowledgeable, and some are not.
It helps people answering questions find questions they might know the answer to.
S/He probably clicked on "Sign Up" and thought of their username and password, then confirmed, or whatever, then started answering people's questions. Just a wild guess.
Plenty of people are answering questions - however - there are thousands of questions asked every day, so yours might not get answered straight away.